// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/renderer/fetchers/manifest_fetcher.h"

#include "base/bind.h"
#include "base/logging.h"
#include "content/public/renderer/associated_resource_fetcher.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "third_party/WebKit/public/web/WebAssociatedURLLoaderOptions.h"
#include "third_party/WebKit/public/web/WebFrame.h"

namespace content {

ManifestFetcher::ManifestFetcher(const GURL& url)
    : completed_(false)
{
    fetcher_.reset(AssociatedResourceFetcher::Create(url));
}

ManifestFetcher::~ManifestFetcher()
{
    if (!completed_)
        Cancel();
}

void ManifestFetcher::Start(blink::WebFrame* frame,
    bool use_credentials,
    const Callback& callback)
{
    callback_ = callback;

    blink::WebAssociatedURLLoaderOptions options;
    options.allowCredentials = use_credentials;
    options.crossOriginRequestPolicy = blink::WebAssociatedURLLoaderOptions::
        CrossOriginRequestPolicyUseAccessControl;
    fetcher_->SetLoaderOptions(options);

    fetcher_->Start(frame,
        blink::WebURLRequest::RequestContextManifest,
        blink::WebURLRequest::FrameTypeNone,
        base::Bind(&ManifestFetcher::OnLoadComplete,
            base::Unretained(this)));
}

void ManifestFetcher::Cancel()
{
    DCHECK(!completed_);
    fetcher_->Cancel();
}

void ManifestFetcher::OnLoadComplete(const blink::WebURLResponse& response,
    const std::string& data)
{
    DCHECK(!completed_);
    completed_ = true;

    Callback callback = callback_;
    callback.Run(response, data);
}

} // namespace content
